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SPOTDIR


 The SPOTDIR card is used in conjunction with SPOTBEAM and SPOTPOS
 to define multiple beam spots. A new primary is created randomly
 in any of the listed beam spots according to their respective weight
 or in sequential order (see SPECSOUR).

 Warning : These four cards are activated by indicating 
SDUM
= BEAMSPOT in the SPECSOUR card. Barring this, the spot cards will be discarded. See also SPOTBEAM, SPOTPOS, SPOTTRAN
WHAT(1)
= x-cosine of the beam spot
Default
: see below
WHAT(2)
= y-cosine of the beam spot
Default
: see below
WHAT(3)
= z-cosine of the beam spot
Default
: see below
WHAT(4)
= x-cosine of the beam "x-axis"
Default
: see below
WHAT(5)
= y-cosine of the beam "x-axis"
Default
: see below
WHAT(6)
= z-cosine of the beam "x-axis"
Default
: see below
SDUM
: Beam spot number (free format)
Default
: n, the number of the last defined spot
Notes:
1) If
WHAT(1)
=
WHAT(2)
=
WHAT(3)
= 0, the beam direction as defined by {BEAMPOS} is used. 2) If
WHAT(4)
=
WHAT(5)
=
WHAT(6)
= 0, the beam x-axis direct- ion as defined by BEAMPOS/BEAMAXES is used, if the beam x-axis is indeed defined, the beam z-axis is the beam direction and the y-axis is computed accordingly 3) If no SPOTDIR card is issued for an otherwise (via SPOTBEAM) defined beam spot, the spot direction and axes are taken from the BEAMPOS and BEAMAXES cards, assuming the beam along the z-axis of the beam reference frame

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